Switch-lock.



Lesina?.

entero.

WILLIAM E. BLNKENSHIP, 0F CHIP, KENTUCKY.

SWITCH-LOCK.

To all whom t may concern.'

Be it known that I, WILLIAM B. BLANK- ENSHIP, a citizen of the UnitedStates, re-

siding at Chip, in the county of Letcher and State of Kentucky, haveinvented certain new and useful Improvements in Switch-Locks, of whichthe following is a specilication.

This invention relates to electrical switches.

and more particularly to an improved means for locking the saine in adesired I position.

The primary object of my invention resides in the provision vof a noveland imknife blade type.

It is well known that in use of switches which are connected in a mainline that repairs become necessary to the main line feeder and it hasbeen found expedient to provide some means for preventing the closing ofa switch connected to the main line so as to prevent injury to mechanicsorlaborers working on the feeder, I therefore provide my invention foruse in locking switches in open position, but it will be readilyunderstood, that the position in which the switch is locked has verylittle bearing upon my invention and that the same has only been shownas locked open for the purpose of illustratingr one of its various uses.

With the above and other objects in view my invention resides preferablyin the construction` combination and arrangement of parts hereinafterset forth in the specification and illustrated in the accompanyingdrawing, in which:- n

Figure 1 is a side elevation of a switch showing my improved lockingmeansl secured thereto,'the switch being shown in closed position;

Fig. 2 is an end elevation of the same;

Fig. 3 is a detail perspective view of the locking element which Iprovide in the pre-V ferred form of my invention; and X Fig. 4 is a.detail perspective view of a catch member which is used in the preferredform ot' my invention.

Similar reference characters indicate similar parts tl'iroughout thevarious views of the drawings.

Referring more particularly to the drawing in which the preferredembodiment of @pacification of Letters Patent.

Patented oet. s, isis.

Applicationiled October 17, 1914. Serial No. 867,156.

my invention is illustrated, the numeral 1 indicates the base of aswitch board or the like having circuit terminals 2 and 3 thereonelectrically connected with the spaced apart switch terminals 4 and 5respectively. A switch blade 6 is hingedly mounted in the circuitterminal 5 by means of the pin 7 as illustrated to advantage in Fig. 1,and said blade 6 being adapted to form an electrical circuit between theterminals 4 and 5 as illustrated to advantage in Fig. 1. As in the usualform of knife switch the terminal 5 comprises a pair of spaced apartears 8 between which the blade 6 is disposed. The locking element whichI desire to provide in this instance comprises a body portion 9 havingone end thereof oifset as indicated at 10 and provided with a transverseopening 11, the said member 9 being secured adjacent the pivot point 7as indicated to advantage in Fig. 1. The up er end of the member 9 isprovided wit an enlarged housing portion. 12 which contains a lock ofany approved type. An opening 13 is provided in the enlarged portion 12to allow of insertion of a key. One of the walls of the enlarged portion12 which contains the lock is provided with an opening 14, the object-ofthe same becoming apparent here# inafter. The member 9 is mounted uponthe base 1 and secured to the upstanding lug 8 by means of a bolt 16,the said bolt 16 passing througha solid portion 17 disposed between thelugs 8, and having an o ening for the reception of the bolt 16 as inicatled to advantage in Fig. 1. The bolt 16 passes through the opening11 in the oppositeI portion 10 of the member 9 and is secured therein bymeans of a nut 18 on the outer end of the bolt 16. The under surface ofthe blade 6 is rounded as shown at 19 to allow the blade to move freely.

Disposed upon the upper edge of' theA blade 6 and substantiallyintermediate its ends l provide a catch element which ccmprises a vbase20 having a lug 21 extending u wardly` therefrom, said lug 21 beingprovided with a catch portion 22 for reception. in the openingr I4 ofthe enlarged portion l2 of the member 9 and is adapted for engagementwith the lock contained in the said enlarged portion l2. The base 20 issecured in any suitable manner to the blade 6, but I have shown openings23 provided in the saidbase. said openings 23 having screws or thc like24 extending therethrough and adapted to Secure the `catch element tothe blade 6. As shown through- 'out the drawings the catch element andthe' 'loekV member 9 "are preferably"I'nad'e of insulating material soasto .prevent shock to/ a person unlocking the switch.

Fromthe above description taken 'in co'nnection `withthe accompanyingdrawings it .that this is not an absolute necessity and that I do notdesire to Abe limited to this .is thought that a clearfand comprehensiveunderstandi'n'gof my invention may be had `'audit is thought that. the`advantages of the vsame ywill ,be readilyappreciated by those `skilledinthe art. While the locking mecha- I nism used with'my improvedl switchhas been illustrated. as formed of. some insulat .f

Iing material it. will bereadily understood I particular kind .ofmaterial. While lI'- have shown and described `my v:invention asypos-,sessing .a peculiar, form and construct-ion it is desired that it beunderstood' that I may jmake ,such changes vin the detail structure,thereof as ldo not. depart from'the spirit and scope of theinvention asclaimed.

`Having thus described my invention what I yclaim ,and desire to secureby .Letters Pat' Cntvisi .In a devicebf the class described, thecombination of a base having a switch' terminalA thereon,v saidv switchterminal *bein :bifurcatcd yto. form ears, said switch termi- V- i,eener nal having a solid lower ybortion, a blade pivotallymounted'between said ears a lockingwelement formed of insulatingmaterial comprising an elongated body,y said body having an of-set'lowerend, a bolt passing through the solid portion of the switch terminal andthrough-said 4lower end of said body; a nut -cailjiedI Vunon Said bolt.'thus holding said body: in 'aY vertical position,

said body being spacedfrom the rear Surfaces of said'terminal, owing tothe ofi-set -construction of the' lower end thereof, `and arr-enlarged`housing formed upon thefupper end of said body and extending beyond thefront and rear sides thereof, thel forward u V surface of saidhousinbeing' in a' plane vin direct alinement with t e portion of theoffset end which engages the solid portion of said switch terminal,Ithespacebetween said off-setlendv and Said housing permitting freel Ymovement of the bl'a de4 locking means car rled within said housmgnnd'acatch carried upon said bladewhereby saidcatch will be ing means whensaid blade

